Monomania is the sixth studio album by American indie rock band Deerhunter, released on May 7, 2013 on 4AD. Produced by both the band and Nicolas Vernhes, the album is the first to feature bassist Josh McKay and guitarist Frankie Broyles.[2][3][4]

The album received universal acclaim upon its release. Monomania reached number seventy-three on the UK Albums Chart.

The album's title is a reference to lead singer Bradford Cox’s obsessive traits.[8] According to Lockett Pundt and Cox, Pierre Schaeffer, Steve Reich, and Bo Diddley were major influences on the album, along with the artists such as Ramones and Ricky Nelson. Bradford Cox noted, "I can't hold a match to that stuff and I never will. I'll never be black, I'll never have that experience. That's what's missing from indie culture, though: Bo Diddley and blackness. There's a struggle that exists in black music and hillbilly music from a certain era. Old music resonates with me, new music doesn't."[9] Cox also described the album as "a very avant-garderock & roll record".[6][10]

Monomania received positive reviews from critics upon its release. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream critics, the album has received an average score of 81, based on 41 reviews, indicating "universal acclaim".[12]

Ian Cohen of Pitchfork Media gave the album a Best New Music designation, writing "Monomania is certainly a strong effort on its own merits, and more importantly, they’ve avoided making their deflating "diminishing returns" record [..] that casts doubts about whether they’ve gone too far down the same path. They’ve pulled off something admirable in making an illogical left turn feel like the logical next step where one didn’t exist."[19]Spin's Marc Hogan also praised the album, writing "An impishly brilliant 12-song set of scruffy garage rock with moments of dreamy shimmer, Monomania leaves no confusion about what sort of band Deerhunter are: one that won't stoop to conquer."[23]

Slant Magazine's Kevin Liedel, on the other hand, gave the album a mixed review, writing "A catalogue of trailing ellipses and blank thought balloons, the album is hardly characteristic of the band's fastidious mien. Whereas both Deerhunter and Atlas Sound albums typically reflect the obsessive brilliance and meticulous pathos of Cox's personality, there's few signs of either on Monomania, which is in dire need of a little less impulse and a bit more OCD."[21]